The Big Dog

[sffcorgi]

Oh, but the Grim is =supposed= to be a Canine Of Unusual Size, 
because he's magical, not a natural dog.  A Great Dane might be the 
right size/height, but not shaggy or bulky enough ('bearlike' again).

A lurcher might work... how big do they get?  Remember, Padfoot was 
large enough to be able to help control a werewolf on the scent of 
human, in an emergency.

And he really should look bigger than Fang, but part of that'll be 
how he's photographed, eh?

Corgi
http://www.SFF.net/people/Corgi/JasonCarter/
Jason Carter is to Sirius Black as Hugh Jackman was to Wolverine!